MyEnquiringMind Posted October 16, 2016 Posted October 16, 2016 (edited) Any one know of an easy fix for the temp and oil pressure guage cluster in my 240z . Both are reading very low and some times zero. When they are working they fluctuate up and down slowly . Both senders test ok . When both sender wires earthed out with ign on eng off both guages come up to quarter for about 15 secs then fluctuate and drop to zero. Edited October 16, 2016 by MyEnquiringMind Quote
gilltech Posted October 16, 2016 Posted October 16, 2016 Check your earths, a bad earth can create all sorts of maladies. Quote
MyEnquiringMind Posted October 16, 2016 Author Posted October 16, 2016 Check your earths, a bad earth can create all sorts of maladies. Earths and supply both good Quote
MyEnquiringMind Posted October 16, 2016 Author Posted October 16, 2016 Do these guages have an internal voltage reg that could be faulty and what are they like to get into for repair Quote
MyEnquiringMind Posted October 17, 2016 Author Posted October 17, 2016 All fixed, the fault was the gauge. I ended up pulling the gauge face off to check the bimetallic strips inside. There are three of them one for each gauge and one with an adjustable contact on the end. The contact was dirty, gave it a light rub with 800 grit paper and now both go full gauge with sender wire earthed out. Quote
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